behind

preposition

/bɪˈhaɪnd/

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at or towards the back of somebody/something, and often hidden by it or them在（或向）…的后面；在（或向）…的背面
- Who's the girl standing behind Jan?站在简身后的女孩是谁？
- Stay close behind me.紧跟在我后面。
- a small street behind the station车站后面的小街
- She glanced behind her.她扭头朝背后扫了一眼。
- Don't forget to lock the door behind you (= when you leave).出门时记着把门锁上。
- The sun disappeared behind the clouds.太阳消失在云层里。
Which Word? at the back / at the rear / behind
at the back / at the rear / behind
- At the back and at the rear have a similar meaning, but at the rear is used more in formal or official language: at the back 和 at the rear 意义相近，但 at the rear 多用于正式或官方语言：What’s that at the back of the fridge?冰箱尽里头那东西是什么？Smoking is only allowed at the rear of the aircraft.只有飞机后舱允许抽烟。 It is more usual to talk about the back door of a house but the rear exit of an aircraft or public building. If something is behind something else it is near to the back of it but not part of it. Compare: Our room was at the back of the hotel我们的房间在旅馆靠后面的地方。 and There’s a lovely wood just behind our hotel.我们酒店后面有一片可爱的树林。
compare in front of
making less progress than somebody/something落后于
- He's behind the rest of the class in reading.他的阅读能力不及班上其他人。
- We're behind schedule (= late).我们的工作进度落后了。
giving support to or approval of somebody/something支持；赞成
- She knew that, whatever she decided, her family was right behind her.她知道，无论她作出什么决定，她的家人肯定会支持她的。
responsible for starting or developing something是…产生（或发展）的原因
- What's behind that happy smile (= what is causing it)?为什么会笑得那么开心？
- He was the man behind the plan to build a new hospital.他就是策划建立新医院的人。
used to say that something is in somebody’s past成为（某人的）过去
- The accident is behind you now, so try to forget it.这次意外已经过去了，把它忘掉吧。
- She has ten years' useful experience behind her.她有十年非常实用的经验。

Word OriginOld English behindan, bihindan, from bi ‘by’ + hindan ‘from behind’.

behind

adverb

/bɪˈhaɪnd/

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at or towards the back of somebody/something; further back在（或向）后面；在后面较远处
- She rode off down the road with the dog running behind.她骑车沿路而去，狗跟在后面奔跑着。
- The others are a long way behind.其余的人远远地落在后面。
- He was shot from behind as he ran away.他逃跑时后背中了弹。
- I had fallen so far behind that it seemed pointless trying to catch up.我落后太多，似乎追赶下去也毫无意义。
in the place where somebody/something is or was留在原地
- I was told to stay behind after school (= remain in school).我被告知放学后留下。
- This bag was left behind after the class.这个书包是有人下课后落下的。
late in paying money or completing work拖欠；积压（工作）
- behind (with something) She's fallen behind with the payments.她尚未付款。
- behind (in something) He was terribly behind in his work.他积压了大量工作。

Word OriginOld English behindan, bihindan, from bi ‘by’ + hindan ‘from behind’.

behind

noun

/bɪˈhaɪnd/

(informal)

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a person’s bottom. People often say ‘behind’ to avoid saying ‘bottom’.腚（义同 bottom，委婉说法） synonym backside
- The dog bit him on his behind.狗咬了他的腚。
Word OriginOld English behindan, bihindan, from bi ‘by’ + hindan ‘from behind’.